Process of producing hydroxy-fatty acids.



45 v acids is effected by tic alkalies.

4 UNITED stra ns PATENT OFFICE.

GEORGES IMBERT, OF NUREMBERG, GERMANY.

PROGESS OF PRODUCING HYDROXY-FATTY ACIDS.

Application filed July 26, 1906;

To all whom it may concern:

Be it known that I, GEORGES IMBERT, a subject of the Emperor of Germany, residing at 54 Gugelstrasse, Nuremberg, Bavaria, Germany, have invented a certain new and useful Process for Producing Hydroxy-Fatty Acids, of which the following is a description.

The present invention consists of a process of producing hydroXy-fatty-acids.

Unsaturated fatty acids are converted into hydroxy-fatty acids by fii st treating them with chlorin or hypochlorous acid, and then heating under pressure the resultant chloroor hydroxychloro fatty acids together with alkalies, alkaline carbonates or alkaline earths.

It is known that the chloroand hydroxychloro-fatty acids can be converted into bydroXy-fatty acids by boiling them with caus- The reaction, however, takes place 'very slowly, and is even still more retarded if the cheaper kinds of alkaline carbonates or alkaline earths are employed as a means for binding the hydrochloric acid. I have found that the reaction can be greatly accelerated by carrying out the heating with the above alkaline substances at an increased temperature under pressure of about 5 atmospheres, the output being at least 90% of the quantity of fatty acid used. This fact was not hitherto known nor'c'ould it be assumed, because under; these conditions it might easily happen, that hydroch'loric acid would be split off, and unsaturated fatty acids formed, instead of forming hydroxyfatty acids, by replacing the chlorin by the hydroxyl group; f i

he necessary quantity of chlorin for forming the chloro orhydroXychloro-fatty acids, may be determined by the iodin nnmber of the fatty acids employed, the quantity is .the same in both cases as is also the case with the necessary the production of the hydroxychloro-fatty introducing chlorin into the solution of the fatty acid containing superfluouscarbonate. This results in the i generation of hypochlorous acid, carbon di- 5 ox id being simultaneously developed. The hypochlorous acid immediately joins the salt Specification of Letters Patent.

amount of alkali, since Patented Oct. 20, 1908- Serial No. 827,748. (flpeoimolm) dloxy-stearic acid) The following two examples will illustrate the method of carrying my improved process into practice.

Emample [z-One kilogram of dich1orostearic acid is mixed with 350 gr. of caustic soda and 5 liters of water and the mass heated to 120 C. for 3 hours in an autoclave. The oxystearic acid may be precipitated out of the liquid obtained by means of acid. v

. Ewamplc [1 .'One kilogram of oleic acid is dissolved with 500 grams of soda in 5 liters of Water, and into this solution is fed about 250 gr. of chlorin the whole being stirred the while, according to the iodin numbers of the oleic acid. The resulting solution of oxychloric stearate of sodium,

which also contains soda and commonsalt, is heated to 150 1. in an autoclave for a .period of 6 hours, the carbonic acid devel-:

oping during this time being continuously blown off and the product is precipitated out, as specified. s The above described processes may be employed for the fatty acids of olive, cotton,

linseed, sesame, castor oils and other oils, as also for cod liver oil and cocoanut fats, and the like, the alkali and chlorin being added in quantities governed by the iodin number of the fatty acids.

I claim as my invention 1 A process of producing hydroxy-fatty acids from unsaturated fatty acids which consists in first treating the latter with chlorin the Whole being stirred the while heating the productunder pressure withat least the theoreticalquantity of an alkal ne substance, driving' off any carbon dioxid as it develops and precipitating out the hydroxyquantity of alkali carbonate, driving oil the H) fatty acid by means of a mineral acid. carbon dioxid as it develops and precipitate 2. A process of producing hydroxy-fatty ing out as specified.

acids, which consists in first treating the so- In testimony whereof I affix my signalutions of an hnsaturated fatty acid in the ture in the presence of two witnesses. presence of the theoretical quantity of al- GEORGES IMBERT. kali carbonate with chlorin, the whole being Witnesses:

stirred the while, heating the resultant mass EUGEN SALITZCERSTEIN,

under pressure with at least the theoretical 'ERIcH BAUM. 

